David Heinemeier Hansson [http://david.heinemeierhansson.com/], creator of Ruby on Rails, recently announced on Twitter [https://twitter.com/dhh/status/251024691337244672] that a feature called Turbolinks will ship as default-on in the Gemfile of Ruby on Rails 4.0. Turbolinks is already [https://twitter.com/dhh/status/251111584317972480] powering